420376388 has 24 divisors (see below), whose sum is σ = 759507672. Its totient is φ = 203433984.

The previous prime is 420376379. The next prime is 420376393. The reversal of 420376388 is 883673024.

It can be written as a sum of positive squares in 4 ways, for example, as 54878464 + 365497924 = 7408^2 + 19118^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21206 + ... + 35922.

It is an arithmetic number, because the mean of its divisors is an integer number (31646153).

Almost surely, 2^420376388 is an apocalyptic number.

It is an amenable number.

420376388 is a deficient number, since it is larger than the sum of its proper divisors (339131284).

420376388 is a wasteful number, since it uses less digits than its factorization.

420376388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14951 (or 14949 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 420376388 is about 20503.0824024096. The cubic root of 420376388 is about 749.1108800003.

The spelling of 420376388 in words is "four hundred twenty million, three hundred seventy-six thousand, three hundred eighty-eight".